Plastic Injection Moulding in the Wine Making Industry

Wine, a form of alcoholic drink typically made from grapes, is a common occurrence in our dining rooms, restaurants, bars, formal and social events. Wine can be categorised into still or sparkling wine based on whether it is carbonated or not as well as red wine, white wine or rosé. But what does the wine making process look like and how are the wine bottles made and labeled? The plastic bottles are made using a plastic injection moulding service and the glass can be made using the blow and press method. 

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The Wine making process

Although conventional knowledge may imply that the wine making process commences upon harvesting of the grapes, the cultivation of the grapes is an important aspect of the process. This explains why vineyards go to great lengths to ensure high quality grapes are produced. After the grapes are harvested, they are carefully selected and taken to the winery where they are prepared for primary fermentation. Red wine is made from the pulp of the black or red grapes- including their skins. The grapes used to make white wine are skinned and crushed to extract the juice while rosés are made either from red grapes or by blending the white and red wine.


The next step in the process is fermentation which could take anywhere from a few weeks to years depending on the type of wine and the variations by the winemaker. The wine then goes through a clarification and stabilization stage where any insoluble materials such as grape skins, tannins, yeast cells or proteins, among others, are removed. The clarification and stabilization may include filtration processes, refrigeration, pasteurization, centrifugation and barrel maturation.


The wine is then bottled for sale or sold in barrels in the case of large scale producers who sell the wine to resellers. Wine is typically sold in glass bottles which are manufactured through two main processes: blow and blow or the press and blow process. The raw materials used in making glass bottles include silica, cullet, soda ash and limestone combined in specific quantities based on the expected characteristics of the bottles. The mixture of raw materials is melted at high temperatures into a molten substance which is then cut into a gob using a precise cutting machine before formation.


The wine bottles have to be labeled before distribution. But what information should be contained on the label? The ingredients, the exact quantities of the ingredients per unit, the percentage of alcohol, the date of manufacture, warning information, standardization marks and the information on the manufacturing company must be on the label. Remember that accuracy in information contained in wine labels is important as it is the only source of information accessible to consumers at the point of purchase.

Wine in plastic bottles

Although the common practice is to store and sell wine in glass bottles, wine can also be stored and sold in plastic bottles albeit for a short period of time. These bottles are manufactured through plastic injection molding service where resin is heated into a molten state in a barrel and subsequently shot into a mold to form the final product. But why use plastic bottles?

First, the plastic bottles come in different sizes and shapes making it easier to distribute wine in large social settings such as festivities and events. Second, plastic bottles are safer to use in social settings since they do not break easily and they cannot be subsequently used as weapons in case of altercations. 

Third, plastic bottles increase the portability of wine in casual settings without worrying about losing the wine if the bottle breaks. Plastic bottles weigh less than their glass counterparts and therefore individuals can carry larger amounts of wine.