초록 ▼

A machine and a method to manufacture soap bars. The machine and method involve a die assembly (10) having a pair of die blocks (11, 12) which support co-operating dies (13, 14). Liquid nitrogen is delivered to the two dies (13, 14) via a throttling passage (18) to cool the soap material being forme

A machine and a method to manufacture soap bars. The machine and method involve a die assembly (10) having a pair of die blocks (11, 12) which support co-operating dies (13, 14). Liquid nitrogen is delivered to the two dies (13, 14) via a throttling passage (18) to cool the soap material being formed.

대표청구항 ▼

1. A method to manufacture a soap bar, said method comprising the step of: providing a first die member; providing a second die member which cooperates with the first die member to form a die cavity; locating the die members so that they are spaced apart from each other; positioning between th

1. A method to manufacture a soap bar, said method comprising the step of: providing a first die member; providing a second die member which cooperates with the first die member to form a die cavity; locating the die members so that they are spaced apart from each other; positioning between the die members a block of material from which the soap bar is to be formed; bringing the die members together so that said material is enclosed in the cavity formed by the die members; circulating a cooling fluid through the die members to cool the material; separating the die members to expose the formed soap bar; ejecting the soap bar from between the die members; and delivering the cooling fluid in liquid form to the die members and then throttling the liquid so that the cooling fluid vaporizes within the die members. 2. The method of claim 1, wherein the cooling fluid is delivered to said first die member and flows therethrough and then through the second die member to exit from the second die member. 3. The method of claim 1, wherein the cooling fluid is nitrogen. 4. The method of claim 1, wherein the cooling fluid vents from the die members to atmosphere surrounding the die members. 5. A method for manufacturing a soap bar comprising the step of: a) providing first and second die members with the first die member spaced apart from the second die member; b) providing a block of soft material and positioning the block between the first and second die members; c) forming the block into the soap bar by bringing the die members together so that the block is enclosed in a cavity formed by the die members and circulating a cooling fluid through the die members to cool the die members and the soft material, said soft material comprising a soap that sticks to the die members if the die members are not adequately cooled, said circulating comprising delivering a cooling liquid to the die members and then throttling the liquid so that the cooling liquid vaporizes within the die members and cools the die members sufficiently so as substantially to prevent the soft material from sticking to the die members; d) separating the die members to expose the formed soap bar; and e) ejecting the soap bar from between the die members. 6. A method of claim 5, wherein the soft material comprises a glycerin soap.