What is the release film release force test method?

1. Take 25.4mm wide and 200mm long TESA 7475 tape and paste it on the test surface (release surface) of the film, and roll it back and forth 3 times with a 2KG standard rolling hand roller. (Note: It is necessary to roll while sticking the whole tape to avoid air bubbles between the release film when applying the tape; 2. After pasting the tape, let it stand for 20 minutes, and the temperature and humidity of the laboratory are controlled at 23±2°C and 50±5% respectively; 3. Stick double-sided tape to the non-test surface of the sample and fix it on the standard steel plate to be tested; 4. Install the material on the fixture, and use the tensile machine to test the tape at an angle of 180 degrees, and the data displayed by the tensile machine computer is the release force (g/in) of the test piece, and the average value of 5 values is the test result.

2024-04-29

Global demand for biodegradable plastics is increasing by 15% annually

According to a newly released report, consumer pressure on merchants and manufacturers, regulations such as plastic bag bans, and an increase in environmental initiatives related to global warming will drive demand for biodegradable plastics.  Demand in North America, Europe and Asia will increase from 269,000 tonnes in 2012 to nearly 525,000 tonnes in 2017, an average annual growth rate of nearly 15%.  Food packaging and foodservice supplies will drive demand for biodegradable polymers, with double-digit levels of demand growth in North America and Europe, Houston-based HIS Chemicals said. In terms of demand, bubble wrap and compostable plastic bags will be at the top of the list.  Michael Malveda, principal analyst of specialty chemicals at HIS Chemicals and lead author of the report, said: "The biodegradable polymer market is still in its infancy and small, but its expected demand growth and demand potential in the coming years is staggering. "  "Food packaging, plates and cutlery are the main markets for these materials because they can be composted with food without sorting, which is a great benefit for waste management, as well as reducing food waste and composting of packaging. Stricter regulations and increasing consumer pressure are driving retailers and manufacturers to switch to these biodegradable products and materials. "  In 2012, Europe accounted for about 55% of the global demand for biodegradable polymers, followed by North America with 29% and Asia with 16%.  "The main barriers to biodegradable polymers include price and performance, but improvements in processing technology, expanded application areas and increased production volumes will significantly overcome these barriers," Malveda said. Many countries have already implemented regulations, such as bans on plastic bags, which have prompted new research into alternative materials and their new uses. "  He said the growth in demand for biodegradable polymers in Asia has been hampered by higher prices for raw materials.  Polylactic acid currently accounts for about 47% of global demand for biodegradable plastics, followed by starch-based plastics at 41%, the report said.

2019-01-15

Release film is used in conjunction with the application

1. Packaging decoration: PET release film can be aluminized by vacuum aluminizing machine to form a kind of aluminized cardboard with metallic luster, which is characterized by degradable and recyclable environmental protection attributes, and is a green, novel and advanced packaging material that has just been developed. 2. Transfer printing: PET transfer film can also be called PET transfer film, it is characterized by repeated use, it can be used in the field of printing on the one hand, PET release film can be used in the field of printing through a special process, so that the printed pattern can be heated and pressurized to transfer to glass, porcelain, plastic, metal, leather and cotton textiles and other materials; On the one hand, it can also be applied to high-tech industries with highly integrated chemicals, plate making, evaporation, precision molds and molding. 3. Protective film: PET release film can also be used in the production of PET protective film materials, so it can not only be used for the protection of stainless steel, nameplate and aluminum plates, as well as the protection of laptop shells and display screens, but also can be applied to the process protection of electronic die-cutting, photoelectric die-cutting, electronics and other products. 4. Reflective film: first-class PET release film can be made into PET reflective film through a special process, which has excellent optical properties, thermal stability and light aging resistance, etc., and is mainly used in traffic reflective signs, billboards and industrial safety signs with reflective requirements.

2024-04-29

British environmental charity launches its first recycled plastic ship

Hubbub, a British environmental charity, has launched what claims to be the world's first recycled plastic ship, Poly-Mer. The organiser's Plastic Fishing Trip is part of an anti-marine debris campaign, and recycled plastic boats made from collected waste will be used in such operations, such as in the waters off London's Docklands. British environmental charity launches its first recycled plastic ship The plastic collected will be used to make more boats and help clean up the river. The idea for the "Plastic Fishing Trip" and later the use of recycling to build a boat came from Canary Wharf College.

2019-01-15

How many types of release films are there?

Release film, also known as peel film, separator film, release film, refers to the surface of the film with separation, is the plastic film plasma treatment, or fluorine treatment, or silicone release agent on the surface of the film material, such as PET, PE, OPP, etc., so that it can show a very light and stable release force for a variety of different organic pressure sensitive adhesives, mainly composed of substrate, primer and release agent. ​ Classification of release films According to different substrates, it can be divided into: PE release film, PET release film, OPP release film, composite release film (that is, the substrate is composed of two or more materials), etc. According to the release force, it can be divided into: Light release film, medium release film, heavy release release film. According to the color, it can be divided into: PET release film of various colors such as red release film, yellow release film, green release film, blue release film, etc. According to the surface treatment, it can be divided into: Single-sided release film, double-sided release film, silicone-free release film, fluoroplastic release film, single-sided corona, double-sided corona, frosted release film, matte release film, etc. According to the Si content, it can be divided into: Silicone-containing release film, silicone-free release film. According to the material and use, it can be divided into: Silicone Film/Release Film - Polyester Film (PET), Polyester Film, Pre-coated Film, Light Diffusion Film, Color Inkjet Film (Computer Film), Printing Film for the Electronics Industry, Matte Film, Drawing Film, White Polyester Film, Black Polyester Film, PETMylar.

2024-04-29

Domestic demand is stable, and external demand for cold plastic enterprises is struggling to survive the winter

China's exports of plastic products are expected to fall by about 20 percent this year. Exports to the United States, Europe and Japan fell the most, but companies focused on the domestic market were not affected much.

2019-01-15

Introduction of PET release film

PET release film, also known as PET silicone oil film, is to coat the surface of PET film with a layer of silicone oil to reduce the adhesion of the surface of PET film and achieve the effect of release. It can be divided into single-sided release film and double-sided release film. According to the release force, it can be divided into light release film, medium release film, and heavy release film. The commonly used thicknesses are: 0.012mm, 0.019mm, 0.025mm, 0.038mm, 0.05mm, 0.075mm, 0.1mm, 0.125mm, 0.188mm, PET release film manufacturers are equipped with large slitting, slicing machines, according to your specifications to roll and slice. PET release film has been widely used in packaging, printing, silk screen printing, pad printing, nameplates, membrane switches, flexible circuits, insulation products, circuit boards, laser anti-counterfeiting, lamination, electronics, sealing materials for films, reflective materials, waterproof materials, medicine (plaster paper), toilet paper, adhesive products, die-cutting punching processing and other industries. How to make a release film PET release film, also known as thermal transfer film, peel film, separator film, slip film, Tianna paper, silicone oil film, anti-sticking film, silicone oil release paper, silicone oil paper, mask film, PET release film is also called PET transfer film. It is mainly used as a carrier of vacuum aluminization, that is, the PET film is placed in the vacuum aluminizing machine after aluminization, the glue is compounded with the paper, and then the PET film is peeled off, and the aluminum molecular layer is transferred to the surface of the cardboard through adhesive action to form the so-called aluminized cardboard. The production process of aluminized cardboard is: PET base film → release layer→ color layer→ aluminized layer → glue coating layer → transferred to cardboard.

2024-04-29

Celebrate the launch of the website of Chaozhou Guotong Plastic Packaging Materials Co., Ltd.!

Celebrate the launch of the website of Chaozhou Guotong Plastic Packaging Materials Co., Ltd.! Founded in 2015 and located in Chao'an District, Chaozhou City, Guangdong Province, Chaozhou Guotong Plastic Packaging Materials Co., Ltd. is a company that produces multi-layer co-extruded films. The company has the right to import and export. The company covers an area of 20 acres, has 3 production workshops with a total of more than 10,000 square meters of modern standard workshops, employs a number of technical engineers focusing on plastics and films, and has a complete scientific quality management system. The company's production environment and products have obtained QS certification and quality system certification. The company has a number of three-layer, five-layer, seven-layer co-extrusion film production equipment, the production equipment is equipped with German PLAST CONTROL (plastic control) automatic air ring, automatic thickness gauge, automatic feeding weighing system. The main products are PE film, water PE film, CPE co-extrusion film, CPP film, nylon co-extrusion barrier film, EVOH high barrier film, buffer bag film, release film, various gray and white, black and white express bag special film, cooking film and cup lid film and other flexible packaging material films. The product specifications are complete, and can be produced according to customer needs, cooperate with customers to jointly research new functional packaging films, and provide qualified flexible packaging materials for users who need packaging products. Guotong plastic packaging materials jointly create a "high-tech, precision model, win-win future" for you to create a high-quality, win-win life model.

2019-01-15

Types and applications of release films

According to the classification of substrates, release films can be divided into three types: PET release film, PE release film and OPP release film. (1) PET release film: Substrate: PET material, namely polyethylene terephthalate, commonly known as polyester resin. Performance characteristics: high film-forming, excellent mechanical properties, strength and toughness are the best among all thermoplastics, tensile strength and impact strength are higher than those of general films; Good stiffness, stable size; It has excellent heat resistance, cold resistance, good chemical resistance and oil resistance, but it is not resistant to strong alkali and is easy to carry static electricity. Uses: Widely used in packaging, printing, silk screen printing, pad printing, nameplates, membrane switches, PCB, insulating products, circuit boards, laser anti-counterfeiting, lamination, electronics, sealing materials with films, reflective materials, waterproof materials, medicine (plaster paper), toilet paper, adhesive products, die-cutting and punching processing and other industries. (2) PE release film: PE material, i.e. polyethylene, is a thermoplastic resin prepared by polymerization of ethylene. Performance characteristics: excellent low temperature resistance, good chemical stability, can resist the erosion of most acids and alkalis (not resistant to acids with oxidizing properties), insoluble in general solvents at room temperature, small water absorption, excellent electrical insulation. Uses: Low-density polyethylene (LDPE) is mainly used in plastic bags, agricultural films, etc.; High-density polyethylene (HDPE) is mainly used in blow molding, injection molding and other fields. (3) OPP release film: OPP material, i.e., oriented polypropylene, biaxially oriented polypropylene. Performance characteristics: good physical stability, mechanical strength, air tightness, high transparency and gloss, toughness and wear resistance, the main disadvantage is poor heat sealability. Uses: The most widely used printed film at present.

2024-04-29

What kind of material is the release film?

A release film is a film with a separating surface, which is composed of a substrate, a primer and a release agent. Plasma, fluorine or silicone release agents on plastic film substrates enable them to exhibit extremely light and stable release forces against a wide range of organic pressure-sensitive adhesives.

2024-04-29