Method for manufacturing foam pads
OwnerWen Shan Lininventor
Life of this patent
Estimating the term…
Abstract
A method for manufacturing foam pads includes a first step of preparing a proper amount of PVC power, DOP curing agent, light calcium carbonate, kaolin, foaming agent and pigment and pouring them into a blending device to be blended and form a liquid starchy material. Next, the liquid starchy material is conveyed into an intermediate material barrel and kept stationary for pre-foaming at normal temperature for about 8 hours and then coated on a conveyer pelt to form a starchy material layer. Subsequently, the starchy material layer is kept stationary and heated at 80-90° C. for about 3-10 minutes and then continuously heated at 185-200° C. for about 20-30 minutes to form an integral-sheeted foam pad. After cooled, the integral-sheeted foam pad is thermo-compressed and cut into various foam pad products.
Claims5
A method for manufacturing foam pads comprising:
- a first step of preparation of materials;
- preparing a proper amount of PVC powder, DOP curing agent, light calcium carbonate, kaolin, foaming agent and pigment;
- a second step of blending of said materials;
- said materials poured into a blending device, said materials blended together in a blending device to form a liquid starchy material;
- a third step of pre-foaming;
- said liquid starchy material conveyed into an intermediate material barrel, said liquid starchy material kept stationary in said intermediate barrel for about 8 hours for pre-foaming;
- a fourth step of coating;
- said liquid starchy material coated on a conveyer belt in an open state after pre-foaming, said liquid starchy material forming a starchy material layer with a preset thickness on said conveyer belt;
- a fifth step of heating;
- said starchy material layer kept stationary and heated by a roasting oven at the temperature of 80˜90° C. for about 3˜10 minutes;
- a sixth step of foaming;
- said starchy material layer continuously heated by another roasting oven at the temperature of 185˜200° C. for about 20˜30 minutes, said starchy material layer foaming and turning into an integral-sheeted foam pad;
- a seventh step of cooling;
- said integral-sheeted foam pad properly cooled in a preset way;
- an eighth step of thermo-compressing in shape;
- said foam pad thermo-compressed by a mold, said foam pad compressed into various shapes and formed with various surface streaks;
- and
- a ninth step of cutting;
- said integral-sheeted foam pad properly cut into different foam pad products according to practical needs.
Dependencies are inferred from the claim text.