Cost-effective industrial laminate


The cheapest industrial laminates (Class X) are used in large quantities where the dielectric properties are less important. It is made from unbleached kraft paper and about 30% phenolic resin. It has a very high water absorption, but its strength and workability are very good. Another product with better electrical properties, containing a higher percentage of resin (usually denatured epoxy resin). Paper is often a cellulose or cotton linters. In the highest technical performance of the laminate with woven and non-woven Woven fiberglass instead of paper. The percentage of resin increased to about 60%.
The largest amount of laminate is a color copper laminate for the board. In the manufacture of such laminates, one or both sides of the laminate have a copper foil as the outer layer. The other layer is typically a fabric impregnated with a flame retardant epoxy resin. Some paper or non-woven fiberglass can be used as the outer layer. The outer glass fabric greatly increases the strength and dimensional stability of the laminate. Eight steps are required to prepare an applicable color copper laminate.
The required wiring pattern was printed on the copper foil with an anti-corrosive coating, and then all unprinted copper was eroded away, and the resist coating was left behind. Solder mask and component identification are then performed using a screen process. The component holes and the individual small plates are punched out from the original size laminate. Embed people by hand or machine components. The molten solder is then welded to the small plate. Special industrial laminates are engraved versions for the manufacture of nameplates and identification signs. The top two layers of the laminate are covered with two contrasts, for example with a black or brown layer, on the white layer, and then the desired content is sculpted on the finished laminate. The enamel removes the top layer and reveals a second contrasting color. The order of the layers can also be reversed to make the dark print look like a light background. The top layer can be monochrome, wood grain or other images. The second layer is often monochromatic. The top layer is a--cellulose paper impregnated with 40% melamine-formaldehyde resin. It is also possible to add a few phenolic resin impregnated unbleached paper layers to the underside of the second color layer. Another industrial laminate is a plywood overlay where the phenolic resin is impregnated without bleaching (sometimes bleaching). Paper is bonded to one or both sides of the plywood.
The resin impregnated paper was compressed and resinized on a low cycle press of a short cycle. Cured laminates are often coated with a primer resin coating to prevent cracking of the plywood surface, greatly improving its ability to withstand climate change.
The cover layer also masks the defects of the plywood surface. An engraved polishing plate is used in the press to obtain a relief-like surface. After the anti-adhesive compound treatment, when the plywood has a cover layer on both sides, the laminate can be used as the bottom plate of the outdoor signboard, and the single-sided cover plywood can be used as the concrete formwork.

  • 13/02/2019
  • Recently
Click here to view Previous or Next

Related News

Casting PA film and production technology

Casting PA film and production technology

  • 21/12/2017 09:33:12

Casting PA film and production technology 1. Casting PA film and its raw materials used: PA film has the advantages of high strength, good toughness, good transparency, good heat resistance and cold…

Read more

Cast film mechanical winding device

Cast film mechanical winding device

  • 19/12/2017 09:21:48

Cast film mechanical winding device Corona treatment device: cast film after corona treatment, can improve the surface tension of the film to improve the printing of the film and together with other…

Read more

Downstream production line auxiliaries

Downstream production line auxiliaries

  • 18/12/2017 09:42:18

Downstream production line auxiliaries Thickness measurement device: In the high-speed continuous production process, cast film thickness measurement must be non-contact automatic tracking. Most o…

Read more

Casting film production line in the cooling device

Casting film production line in the cooling device

  • 15/12/2017 10:03:16

Casting film production line in the cooling device Casting production line in the cooling device mainly by the rack, cooling roller, peel roller, refrigeration system and air knife, auxiliary device…

Read more

Hot News

ABS sheet extrusion molding process control points

ABS sheet extrusion molding process control points

ABS sheet extrusion molding process control points(1) Feeding. The material should be fed in time to ensure that the hopper is not empty, in order to prevent the air from directly entering the drying cycle system, affecting the dry return air speed. Diffe

Preparation process of ABS sheet

Preparation process of ABS sheet

Preparation process of ABS sheet(1) The raw material is dried. ABS pellets are extremely hygroscopic and must be used before use.Dry. Drying can use hot air circulation oven or hot air hopper type reclaimed materialDryer. The drying process undergoes thre

Add waste materials to ABS sheet

Add waste materials to ABS sheet

Add waste materials to ABS sheet1. Material selection and performanceABS is an amorphous polymer. Under the action of heat and external force, it enters the viscous flow state from the glass state at room temperature through a high elastic state to form a

Plate (sheet) material forming process

Plate (sheet) material forming process

Plate (sheet) material forming processThe plastics of the production board (sheet) are mainly soft polyvinyl chloride, hard polyvinyl chloride, polyethylene.Alkene, polyamide, polymethyl, polycarbonate, cellulose acetate, etc., the first four varieties ar

Characteristics and uses of PTFE - Suspension PTFE

Characteristics and uses of PTFE - Suspension PTFE

Characteristics and uses of PTFEVariety: Suspension PTFEfeature:1. White waxy fine particle material;2. Poor strength;3. Self-lubricating, non-adhesive, stress cracking is good, dynamic and static coefficient is the lowest among plastics;4. Excellent resi

Tags