Believe that many Chinese friends have met this kind of situation, a dish for packaging in the restaurants, returned home, found that there was a big hole at the bottom of packaging plastic boxes, estimation is the poor quality of plastic boxes are oil of high temperature melt away, also jokingly...
From time to time, it is reported on the Internet that eating XX food can lead to early puberty, which makes every parent worry about their children’s diet. Now, some people say that small night lights can also make babies and children develop in advance, which makes mothers very worried.
A...
1) Wooden rice spoon or spoon – easy to breed bacteria
2) Plastic or wooden cooking shovel – although easy to use but easy to breed bacteria
3) The barbecue sauce brush is a hotbed of bacteria, and it is quickly changed to silica gel.
4) The wiper wiper should not only be separated...
Many pet owners, without professional knowledge of pet care, are often at a loss when their dogs get sick.
In order to avoid this situation, dog owners should learn something about the care of their dogs when they are sick, so as to take better care of our beloved dog and ensure his healthy growt...
Press molding: mainly used for thermosetting plastic molding, according to the characteristics of forming materials and processing equipment and technology, press molding can be divided into molding and laminating.
1. Molding
Compression molding, also known as compression molding, is the main met...
Calendering: a process by which plastic material is connected to a film or sheet by a series of heated rollers under the action of extrusion and extension.
Process features:
Advantages: good product quality, large production capacity, can be automated continuous production;
Disadvantages: large e...
Extrusion molding: also known as extrusion molding, mainly suitable for thermoplastic molding, also suitable for part of the flow of good thermosetting and reinforced plastic molding.Its forming process is the use of rotating screw, will be heated melt thermoplastic raw materials, from the requir...
Blow molding: it is to extrude the molten thermoplastic material from the extruder, clamp it into the mold, and then blow air into the material, the molten material expands under the action of air pressure, fitting to the mold cavity wall, and finally cooling and curing into the required ...