Packaged composition for the delivery of said composition into an aqueous medium
A composition, aqueous medium technology, applied in the direction of biological packaging, detergent composition, packaging, etc., can solve the problems of increased waste, increased cost, increased logistics complexity for manufacturers, etc.
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Examples
Embodiment 1
[0023] Example 1: Thermoformed shell
[0024] Compositions as listed above were extruded into sheets ranging in thickness from 100 to 750 microns. These sheets are pressurized or vacuum thermoformed at temperatures between 110 and 150°C into "clamshell"-like structures. This structure consists of a solid hemispherical member large enough to hold the desired product dose and an annular ring surrounding the equatorial plane of said hemispherical member. Said annular ring is hinged to a cover made of the same material.
[0025] Product is loaded into the hemispherical member, the lid is laminated and sealed to the annular ring by heat, adhesive or solvent to produce a sealed hemispherical container.
[0026]Keep the size of the annular ring at a minimum to reduce "sharp" edges, although the annular ring needs to be of sufficient size to form a strong seal. Ways to accomplish this include using a "sealing knife" device to cut in close proximity to the hemispherical member to ...
Embodiment 2
[0027] Example 2: Thermoformed housing with separate lid
[0028] The hemispherical part was made by processing the composition stock as in the preceding examples, and the separate cover part was likewise made. The base member is filled with product and the lid member is attached to the base member by a "slip fit" or undercut arrangement to form an effective seal that prevents escape of the product. The cover part may also be sealed by heat, solvent or adhesive as in the previous embodiments.
[0029] In both of the above examples it is advisable to have the volume of the container slightly larger than the volume of the product so that when the structure starts to dissolve / perforate water can enter the device and move freely inside it , so as to maximize the speed of product dissolution.
Embodiment 3
[0030] Example 3: Injection Molded Base and Lid Parts
[0031] The raw material composition is extruded as before and injected into a mold at room temperature with a nozzle temperature between 120°C and 170°C and a pressure between 40000kPa (400bar) and 150000kPa (1500bar) to form the container. Molds were constructed to make parts including hingedly attached lids or separate parts as in Examples 1 and 2.
[0032] Manufacturing these devices using thin-wall injection molding allows for greater accuracy in the sealing system. A threaded or socketed cover part can be manufactured, mitigating any problems with sharp areas of the sealing portion of the annular ring. Furthermore, injection molding mandates greater freedom in the design of the base part and cover part. It is possible to minimize the overall wall thickness and material usage while maintaining the overall rigidity of the structure by varying the wall thickness to provide a reinforced flange, and it is also possibl...
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Abstract
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