Carta di rilascio del film di rilascio, la differenza tra i due, non può esserci una piccola differenza Una varietà di adesivi sensibili alla pressione organici può esibire una forza di rilascio estremamente leggera e stabile.

Diversi adesivi organici sensibili alla pressione, come gli adesivi hot-melt, gli adesivi acrilici e gli adesivi sensibili alla pressione nei sistemi in gomma, richiedono forze di rilascio differenti per la pellicola di rilascio. I prodotti per l'isolamento dell'ago hanno diverse viscosità e caratteristiche di rilascio. La forza viene regolata di conseguenza per ottenere una forza di rilascio molto leggera e stabile durante il peeling.

La classificazione del film di rilascio può essere suddiviso in diversi substrati: film di rilascio in PE, film di rilascio in PET, film di rilascio di OPP e rilascio di composito (cioè, il substrato è composto da due o più materiali).

Single-sided release film: HDPE (low-pressure polyethylene) release film, used for LDPE (high-pressure polyethylene) release film such as sealing tape and other waterproof rolls. BOPP (stretched polypropylene) release films for mechanical product packaging, hot-melt adhesive packaging, health care products (diapers), anti-corrosion coils, etc., used for PET (stretched polyester) release for sealing tape, silent tape, etc. Type membrane. Adhesive protection and other double-sided release films, red / green polyolefin (PE).

Double-sided release film: used for foam tape transparent PET double-sided release film; double-sided adhesive anti-sun light isolation film (HDPE silver coating film); waterproof coiled material sunscreen cooling enhanced BOPP reinforced aluminum substrate ( BOPET).

The release paper can be classified according to plastic release paper and non-plastic release paper; it can also be classified into silicone release paper and non-silicon release paper according to release agent. There is plastic release paper, because the release agent has a certain permeability, if there is no certain barrier, the release agent will penetrate into the paper, resulting in poor curing and the use of a large amount of release agent (too high cost) and many other defects factor.

Therefore, plastic coating (commonly known as coating) needs to be done on paper. Polyethylene (PE) particles are generally used for coating in China. The melt index is required to be around 7. Domestic PE particles generally use Yanshan Petrochemical 1C7A. Divided into single-plastic release paper and double-plastic release paper, non-plastic release paper, there are other special-treated release paper such as glassine, CCK and so on.

The release paper produced by laminating release paper base paper after laminating

Because there are paper wool and fibers on the surface of the paper, the film must reach a certain amount to ensure that there is no penetration point, that the silicone oil will not penetrate into the paper, and that there will be no peeling defects.

The film release paper is divided into single and double shower. Generally, single-sided release paper is single-leaf, of course, there are double-sided single-sided release paper, because the release surface is thicker, the film is generally 20 grams, and the non-release surface is generally thinner, 15 grams. smooth. If the coated paper is 22 grams on both sides, it is more suitable for double-sided release paper.

The film release paper is generally made of all wood pulp paper, especially in the electronics industry. If you choose straw pulp paper, there will be a lot of paper scraps and easy torn edges when die cutting. All wood pulp paper is generally called kraft paper, such as natural kraft paper (commonly known as: the cow), white kraft paper (commonly known as: white cow), yellow kraft paper (commonly known as: Japanese yellow color cattle), blue kraft paper (commonly known as: Indonesian blue color cattle).

Glassine release paper is coated with release agent after overpressure to produce release paper

Grazie alla super calandratura, Grassin ha una buona tenuta della carta ed è particolarmente adatto per l'uso nelle fustellatrici. Poiché la glassine domestica può produrre solo una grammatura compresa tra 60 e 80 grammi, la fustellatura preferisce utilizzare una grammatura superiore a 100 grammi, ad esempio 120 grammi e 140 grammi. Ha una certa trasparenza, buona rigidità e buone prestazioni di fustellatura. Tutti facevano affidamento su carta di base importata, ma poiché la quantità minima di carta di base importata è di 20 tonnellate per container e deve essere prenotata con 3 mesi di anticipo.