Die for manufacturing soap bars

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C264S028000, C264S319000, C264S330000

Reexamination Certificate

active

06511626

ABSTRACT:

TECHNICAL FIELD
The present invention relates to machines to manufacture soap bars.
BACKGROUND OF THE INVENTION
Soap bars are manufactured by introducing into a die a block of relatively soft material from which the soap bar is to be formed. Typically, dies are provided with cavities trough which cooling water passes to cool the dies.
A problem with the above mentioned machines is that the soap bars formed frequently stick to the soap die because the current method of cooling has insufficient capacity and flow rate, particularly with glycerine/translucent soap. Still further, the above mentioned machines are relatively slow due to insufficient cooing capacity.
OBJECT OF THE INVENTION
It is the object of the present invention to overcome or substantially ameliorate the above discussed disadvantages.
SUMMARY OF THE INVENTION
There is disclosed herein a method to manufacture soap bars, said method including the steps of:
providing a first die member;
providing a second die member which co-operates with the first die member to provide a die cavity;
locating the die members so that they are spaced by a gap;
delivering to said gap 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; and
ejecting the soap bar from between the die members; and wherein
said cooling fluid passes from a liquid phase to a gaseous phase within the die members.
There is further disclosed herein a machine to manufacture soap bars, said machine including:
a first die member;
a second die member to co-operate with the first die member to provide a die cavity;
means supporting the die members for relative movement therebetween a first position providing the die cavity and a second position at which the die members are spaced to permit material to form a soap bar to be delivered to a position between the die members and permit removal of a formed bar of soap; and
ducts within the die members through which a cooling fluid is to pass, said ducts including throttling means to cause expansion of the fluid within the die members, from a liquid phase to a gaseous phase.
Preferably, the above machine would have the ducts including passages extending to the exterior of the die members so that the cooling fluid vents to atmospheres surrounding the die members.
Preferably, the cooling fluid is nitrogen.


REFERENCES:
patent: 3946981 (1976-03-01), Frank
patent: 4201742 (1980-05-01), Hendry
patent: 4264292 (1981-04-01), Pisoni
patent: 4327045 (1982-04-01), Nishikawa et al.
patent: 4472131 (1984-09-01), Ryder
patent: 4680001 (1987-07-01), Waters
patent: 4934155 (1990-06-01), Lowes
patent: 5085056 (1992-02-01), Page
patent: 5433081 (1995-07-01), Major et al.
patent: 5458191 (1995-10-01), Chiang et al.
patent: 5460761 (1995-10-01), Larsson
patent: 5468438 (1995-11-01), Yada
patent: 5516470 (1996-05-01), Larsson
patent: 5573787 (1996-11-01), Lupke et al.
patent: 5811171 (1998-09-01), Osborne et al.
patent: 6048189 (2000-04-01), Kurihara et al.
Don Green, editor, Perry's Chemical Engineers' Handbook, 1997, p. 2-20.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Die for manufacturing soap bars does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Die for manufacturing soap bars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Die for manufacturing soap bars will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3059208

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.