The facestock are molded paper, coated paper, laser paper, temperature-resistant paper, transparent PVC, electrostatic PVC, polyester PET, PP, PC, kraft paper, fluorescent paper, thermal paper, copper wire dragon, silver wire dragon, gold plated paper, silver plated paper, synthetic paper (CPC/PP/HYL/excellent paper/pearlescent paper), aluminum foil, fragile (anti-counterfeiting) paper, masking paper, cloth label (Tavic/nylon) pearl dragon, sandwich copperplate, thermal paper.The film is transparent PET translucent PET transparent OPP translucent OPP transparent PVC glossy white PVC matte white PVC synthetic paper, glossy gold (silver) polyurethane, matte gold (silver) polyurethane.The rubber types are general super-adhesive type, universal strong adhesive type, refrigerated food strong adhesive type, universal re-opening type, and fiber re-uncovering type.The liner are white, blue, yellow glassine paper, glassine (or garlic paper onion), kraft paper, polyester PET, coated paper, polyethylene.

Coating: Corona treatment or printing treatment (printing treatment)Face paper: According to the material, it is divided into coated paper/PET/PVC, the back of the facial paper is coated with adhesiveAdhesive: The types are permanent adhesive (strong adhesive) type, removable (weak adhesive) type, and re-adhesive typeLiner: Ordinary liner and Grassine bottom paper, the surface is coated with a silicone, oil layer, which has a barrier effect on the adhesive

Appearance: If the paper is very white, the protective coating and thermal coating of the paper are unreasonable, too much phosphor is added. The better paper should be slightly green. The paper is not as smooth as it looks uneven, which indicates that the paper coating is uneven. If the paper looks very reflective, it is also too much phosphor added, the quality is not very good.Fire roasting: The method of roasting with fire is also very simple, You can use a lighter on the back of the paper to heat, the color on the paper is brown after heating, then the heat-sensitive formula is not very reasonable, the storage time may be relatively short. If the black part of the paper has fine stripes or uneven color blocks, the coating is uneven. Better quality paper should be black-green (with a little green) after heating, and the color block is uniform, and the color gradually fades from the center to the periphery.Sunlight exposure comparison identification: the printed paper is coated with a highlighter and placed under the sun to dry (this can accelerate the reaction of the thermal coating to light), which paper turns black faster, the shorter the storage time it will be.

When thermal paper is placed above 70 degrees Celsius, the thermal coating begins to change color. The cause of its discoloration should also start with its composition.components in thermal paper coatings: one is colorless dye or cryptochrome dye; The other is a color developer. This type of thermal paper is also known as two-component chemical thermal recording paper.Commonly used as colorless dyes are mainly substances such as crystalline violet lactone (CVL) of triphenylmethanylphthalide system, fluorane system, colorless benzoylmethylene blue (BLMB) or spiropyran system.Commonly used dispersants are mainly: polyvinyl alcohol L-3266, polyvinyl alcohol GL-05, polyvinyl alcohol KL-03 (produced in Japanese synthetic chemistry).Commonly used top coating and bottom coating additives are: gohsefimer Z-200, polyvinyl alcohol T-350, polyvinyl alcohol N-300.Commonly used as color developers: para-hydroxybenzoic acid and its esters (PHBB, PHB), salicylic acid, 2,4-dihydroxybenzoic acid or aramid sulfone. After the thermal paper is heated, the colorless dye and the color developer chemically react to produce color, so when the thermal paper is used to receive a signal on the fax machine or directly printed with a thermal printer, the picture and text are displayed. Since there are many varieties used as colorless dyes, the color of the handwriting is different, including blue, purple red, black, etc.

Thermal paper: used as a communication carrier for text and graphics on the fax machine, that is, as fax paper; Used as recording materials in medical and measurement systems, such as ECG drawings, thermal instrument recording paper, etc.; Printer paper for Internet terminals; In terms of commercial activities, it is used to make trademarks, code signing (POS), etc., of which the amount of fax paper accounts for a large proportion.The production principle of thermal paper is to apply microparticle powder on the ordinary paper base, the composition is colorless dye phenol or other acidic substances, separated by a film, under heating conditions, the film melts,,,, , the powder is mixed to . reaction The handwriting on the thermal paper is unstable and easy to fade, making the content of the document illegible.Commonly used lottery tickets use thermal paper.Ordinary thermal paper is not suitable for long-term storage, but good thermal paper can be stored for 30 years or even longer.

Thermal paper is also known as thermal fax paper, thermal recording paper, thermal copy paper, and in Taiwan it is called thermal copy paper. Thermal paper is a kind of processed paper, and its manufacturing principle is to apply a layer of "thermal paint" (thermal discoloration layer) to high-quality base paper. Although there are more than a dozen chemicals used in this color-changing layer, at least the following compounds are available: colorless dyes, which have a wide variety of dyes and commonly use fluorescent compounds; The color developer accounts for about 20% or less, and the commonly used are bisphenol and parabenic acid; Sensitizers account for about 10% or less, which contains benzenesulfonic acid amide compounds; The filler accounts for about 50% or less, and calcium carbonate (particles) is commonly used; Adhesives account for about 10% or less, such as polyvinyl acetate; Stabilizers, such as dibenzoyl p-phthalate; lubricants, etc. Therefore, the process is difficult and the technical requirements are high.